Intex Adapter B for sand pool filter up grade

We recently bought a sand filter Intex SF70110 for our Intex 15'x42" pool. Can I just use the Adapter B that I have found on Amazon and connect the hose right to it? I have read cutting the liner and using larger fittings and the plunger valve is the way to go, but is there any harm in just connecting the hose straight to the adapter, or will it not fit?
 
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